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A-Z Animals is the world’s most trusted online animal encyclopedia. If you want cute animals, types of wild animals, exotic pets, weird animals or are looking for comprehensive pet guides for dogs and cats, you’ll find it here!
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The 11 Biggest Lakes in Missouri
From the Dissected Till Plains and Mississippi Alluvial Plain to the Ozark Mountains, Missouri is a Midwestern state with a diversified landscape. Missouri lies towards the heart of the country, bordered by eight states. Among Missouri’s rich flora and fauna are reptiles, mammals, birds, fish, trees, and shrubs. It also has abundance of freshwater, with […] Read More
Cockapoo vs Labradoodle: 5 Key Differences
While there are many different poodle cross breeds, we’ll be discussing everything you need to know about the Cockapoo vs Labradoodle today. Both of these dogs have poodle DNA, but what else might they share with each other, and in what ways are they different? If you are interested in learning more about the Cockapoo […] Read More
Cockapoo vs Maltipoo: 5 Key Differences
When it comes to comparing all of the poodle cross breeds available today, what are the key differences between the Cockapoo vs Maltipoo? While these two dogs share poodle DNA, there are a great many things that separate them from one another. But what might some of these traits be, and what do these dogs […] Read More
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The 7 Major Different Types Of Animals
The official mammal class is Mammalia. Animals that are considered mammals include warm-blooded vertebrates that have hair or fur and whose babies drink milk. Unlike other animal types like birds and insects, all mammal babies drink milk that comes from their mother’s bodies. This is one of the key ways to know if an animal is a mammal.
See the complete list of mammals.
Lizards, dinosaurs, crocodiles, turtles, and snakes – all belong to that ancient and stout class of animals known as the reptiles. This is a diverse group with more than 10,000 different species and a huge representation in the fossil record. Once the dominant land vertebrates on the planet, reptiles still occupy just about every single ecosystem outside of the extreme north and south.
See the complete list of reptiles.
Fish are aquatic vertebrates. They usually have gills, paired fins, a long body covered with scales, and tend to be cold-blooded. "Fish" is a term used to refer to lampreys, sharks, coelacanths and ray-finned fishes, but is not a taxonomic group, which is a clade or group containing a common ancestor and all its descendants.
See the complete list of fish.
Birds, members of the class Aves, include more than 10,400 living species. Their feathers distinguish them from all other classes of animal; no other animals on earth have them. If you see an animal with feathers, it’s undoubtedly a bird. Like mammals, birds are warm-blooded vertebrates with four-chambered hearts. However, they are more closely related to reptiles and are believed to have evolved from dinosaurs.
See the complete list of birds.
The official class of amphibians is Amphibia. To have the classification of an amphibian, an animal must be a vertebrate, require water to survive, be cold-blooded, and spend time both on land and in water. Though other animals only live on land or in the water, amphibians have the unique ability to thrive equally in both. Amphibians cover over 6,000 different species across the globe, but about 90% are frogs.
See the complete list of amphibians.
The definition of an invertebrate is any animal that does not have a backbone or vertebral column. The most prolific and easily recognizable members of the invertebrate family are insects. It’s estimated that upwards of 30 million individual species of invertebrates may exist accounting for between 90-95 percent of all organisms on the planet.
See the complete list of invertebrates.
All insects are part of the taxonomical phylum Arthropoda, and they are collectively referred to as arthropods. It is common to see this name misspelled as “anthropod,” but this is not the correct term. They can be found in nearly every environment on the planet, and they currently account for over half of all known living organisms in the world. They have undergone many cycles of evolution depending on the resources available to them.
See the complete list of insects.
Pet Guides: Everything To Know About Cat and Dog Breeds
Most Popular Pet Dog Breeds
See a complete list of dog breeds.
Most Popular Pet Cat Breeds
See a complete list of cat breeds.
Expert Pet Product Reviews
The AZ Animals team has spent years working with and studying the latest research on what products are best for our pets and yours, and we’re excited to share our expert pet product recommendations with you.
See all of our Expert Pet Product Reviews.
Explore Types of Wild Animals from Around the World
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Animals By Letter: Explore A to Z Animal Lists
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Animal Reference Guides
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Even more from A-Z Animals
American Akita vs Japanese Akita: 5 Key Differences
Did you know that there are two different Akita breeds known as the American Akita vs Japanese Akita? How are these breeds similar, and in what ways do they differ? If you have been considering adopting an Akita, you’re in the right place. Learn everything you need to know about these two distinct breeds here! […] Read More
Giganotosaurus vs Stegosaurus: Who Would Win in a Fight?
Most people imagine T-Rex when they think of the biggest and toughest dinosaurs. However, another dinosaur that lived a few million years before T-Rex was arguably larger, faster, and deadlier. The Giganotosaurus was a massive theropod with a powerful bite and plenty of power. Yet, what happens when you pit a reptile with great offensive […] Read More
Indominus Rex vs Ankylosaurus: What Are the Differences?
Dinosaurs are interesting creatures because they were such large, deadly reptiles. Ankylosaurus was a walking biological tank with bony plates that protected it from harm. The dinosaur even had a tail with a bony club on the end that could crack other dinosaurs’ bones. As cool as real dinosaurs were, humans love to use their […] Read More
How Old is the Grand Canyon?
The Grand Canyon is one of the seven natural wonders of the world and is located in Arizona, United States. It was carved by the Colorado River, which flows all the way from the Rocky Mountains. The formation is 277 miles long, 18 miles wide, and over a mile deep. These are the numbers that […] Read More
Catahoula Leopard Dog vs Australian Cattle Dog: What Are Their Differences?
The Catahoula Leopard dog is a breed native to Louisiana. It has its origins in crosses between wolf-like dogs that Native Americans owned and dogs that Spanish and French settlers brought between the 16th and 18th centuries. These dogs demonstrate guarding and hunting abilities, although their initial use was for rounding up feral cattle and […] Read More
Staffordshire Bull Terrier vs American Staffordshire Terrier: 5 Differences
You may not yet know all of the differences between the Staffordshire Bull Terrier vs American Staffordshire Terrier. What might some of the most common differences be between these two beloved dog breeds, and what might you expect out of owning one? If you’re looking for a lovable and goofy dog, either of these two […] Read More
T-Rex vs Ankylosaurus: What Are the Differences?
The Cretaceous was a geological period that started about 145 million years ago and lasted until almost 66 million years ago, the time when dinosaurs died out. During this last age of massive terrestrial fauna, the T-Rex was still stomping around and eating smaller dinosaurs. Among the other gargantuan reptiles that existed during this time […] Read More
Havapoo vs Havanese: What’s the Difference?
Given that they are related, you may be wondering what all of the differences are between the Havapoo vs Havanese. One of these dogs is purebred, while the other is a cross between two very popular dogs. But which one is which, and what can you expect out of the behaviors and personalities of both […] FOR LEXUS GS300 GS430 2x FRONT WHEEL HUB BEARING COMPLETE ASSEMB
Ankylosaurus vs Stegosaurus: What Are the Differences?
When most people think of dinosaurs, they imagine the massive carnivores like the T-Rex. However, some of the most interesting and relatively mysterious dinosaurs are herbivores, like the Ankylosaurus. With its armored body and the club on its tail, it was certainly an interesting reptile. The Stegosaurus is another cool, spiky dinosaur with a dangerous […] Read More
Stegosaurus vs T-Rex: Who Would Win a Fight?
When we conceptualize battles between herbivores and carnivores, it’s sometimes too easy to rule in favor of the animal that is an apex predator. However, this mode of thinking is harder to apply to creatures of the past, like dinosaurs. Prehistoric giants like the Stegosaurus may not have possessed hunting instincts, but they had the […] Read More
Hookworms in Dogs: Signs, Treatment, and Risks
Hookworms, also known by their scientific names: Ancylostoma caninum, Ancylostoma braziliense, Uncinaria stenocephala, are parasites that infect dogs and cats. The reason they are called hookworms might make your skin crawl. They get their name from the mechanism by which they attach themselves to your pet’s intestines. Their mouths have hook-like teeth that allow them […] Read More
This Is How Far Your Dog Can Hear Noise (Crazy Distance!)
Does your dog seem to notice even the slightest of sounds from across the room? How about from the other side of the house? Does it come running to you when it hears a can of food being opened? Maybe your dog even begins barking seconds before a person rings your doorbell. It’s no secret […] Read More
How Many Bones Are In The Human Body? Which Are The Biggest?
As an embodiment of perfect creation, the human body has been a fascinating topic to discuss since time immemorial. With the billions of integrated units in it, it is surprising that many questions still revolve around its morphology, functionalities, repair, and capacity, even now. No doubt, there is so much to talk about the human […] Read More
How Many Bones Are In The Foot, Actually?
The foot is a significant part of the human body necessary for standing, jumping, walking, and running. As common and valuable as the foot is, not everyone can tell the number of bones present in them, not to mention the different foot diseases and how to care for them. In this article, you’ll get to […] Read More
How Old is the Mississippi River?
The Mississippi River is famed for its natural beauty as well as its role in American history and industry. It is also the world’s third-largest river basin, covering approximately 1.2 million square miles of water from 31 U.S. states. The river also provides clean drinking water for millions of people and is home to a […] Read More
10 Brown Snakes In Georgia
Spanning a vast 57,000 square miles, Georgia has an array of habitats that are home to many wonderful animals. With miles of coastline, stunning mountains, and acres of farmland, there are many rich and diverse ecosystems. Some of the most abundant animals to call Georgia home are snakes. There are 46 species of snake in […] Read More
How Many Bones Do People Have in Their Hands?
The hand, as studied, is a prehensile, multi-fingered appendage attached to the end of the forearm of many primates like humans, monkeys, chimpanzees, and lemurs. Except for a few born with certain conditions, all humans naturally have hands, but not everyone knows much about their hands, let alone the number of bones. As we delve […] Read More
The 6 Active Volcanoes in Hawaii
Volcanoes seem like a distant reality, not something that could affect us here in this day and age. But the feeling is misleading because volcanoes rumble to life regularly. In fact, the islands of Hawaii currently have six active volcanoes. The string of islands was actually formed from volcanoes over time, many of which are now […] Read More
How Many Bones Do Sharks Really Have?
Sharks are amazing creatures that live in the sea. Surprisingly, they have unusual body structures compared to other aquatic animals like dolphins and piranhas. These enormous aquatic creatures are far more than a predator; they are also the balancing component of the ecosystem. Most of the time, we believe we know everything there is to […] Read More
Discover the Mississippi River’s “Dead Zone” the Size of New Jersey!
The Mississippi River is known as one of the most important rivers in the United States. It has been used for transporting goods, generating electric power, and contributing fresh water to cities like Baton Rouge, New Orleans, and more. Unfortunately, the river’s mighty flow brings more than water to the river’s mouth. Today, we’re going […] Read More